150265544881 has 3 divisors (see below), whose sum is σ = 150265932523. Its totient is φ = 150265157240.

The previous prime is 150265544873. The next prime is 150265544887. The reversal of 150265544881 is 188445562051.

The square root of 150265544881 is 387641.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 188445562051 = 12391 ⋅15208261.

It can be written as a sum of positive squares in only one way, i.e., 12624544881 + 137641000000 = 112359^2 + 371000^2 .

It is not a de Polignac number, because 150265544881 - 2³ = 150265544873 is a prime.

It is a super-2 number, since 2×150265544881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150265544887) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 193821 + ... + 581461.

Almost surely, 2^150265544881 is an apocalyptic number.

150265544881 is the 387641-st square number.

150265544881 is the 193821-st centered octagonal number.

It is an amenable number.

150265544881 is a deficient number, since it is larger than the sum of its proper divisors (387642).

150265544881 is an frugal number, since it uses more digits than its factorization.

150265544881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775282 (or 387641 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 49.

Multiplying 150265544881 by its sum of digits (49), we get a square (7363011699169 = 2713487²).

It can be divided in two parts, 1502655 and 44881, that added together give a square (1547536 = 1244²).

The spelling of 150265544881 in words is "one hundred fifty billion, two hundred sixty-five million, five hundred forty-four thousand, eight hundred eighty-one".